In recent years, there has been a significant growth of interest in ensuring that child care provision for children is of a high quality. This interest has been stimulated by research evidence according to which good quality child care has a positive influence on children's overall development. The global quality in Greek preschool and infant/toddler classrooms was assessed with ACEI Global Guidelines Assessment (GGA), Early Childhood Environment Rating Scale-Revised (ECERS-R) and Infant Toddler Environment Rating Scale (ITERS). Our research data, confirm previous research results from Greece, and suggest that Greek child care centers provide low quality care and education. Comparisons between the tools employed revealed great similarity between the ACEI GGA and ECERS-R ratings on issues relating to environment and physical space, program evaluation, communication with families, opportunities for family and community participation, recognition of diversity, curriculum and activities, etc. On the other hand the ACEI GGA and ITERS seem to measure different aspects of process quality, as far as infant care and education are concerned. Research results indicate the need for immediate improvement and revision of the policies employed by Greek state, as far as young children's education and care are concerned.